I haven’t had many of the problems described (so perhaps developers are paying attention), so far the app hasn’t crashed, connects with my iTunes playlist, and keeps good track of my run, speed etc. However, I’m pretty sure that some songs are not being adjusted. Usually I can tell that the speed of a song played through the app is faster than the original. But fairly often, it does not seem that a song is speeded up. I’m not sure if this is related to copyright issues (a previous app I had could only adjust a few certain songs as the other songs were copyright protected) or whether it’s a technical problem. If the former, it would be good if the developers state this up front. If the latter, it would be good if this could be fixed so that all songs reach the desired tempo. Also, I’m only able to indicate a desired tempo at increments of five (e.g., 160, 165, 170). It would be great to do smaller increments (that is, 161, 162, 163)